XAPP456 - Spartan-3 系列 FPGA 的定制 PCI 时序预算( Application Note: Spartan-3 Generation FPGAs R Custom PCI Timing Budgets for Spartan-3 Generation FPGAs XAPP456 (v1.0) March 13, 2007 Author: Eric Crabill Summary The PCI Local Bus Specification, Revision 3.0 (“the PCI specification”), defines two timing budgets. One timing budget is for use with 33 MHz operation, and the other timing budget is for use with 66 MHz operation. These two timing budgets define the I/……